Process for obtaining a charge liquid particularly adapted for explosion-motors from liquid hydrocarbons.



be a ful1,cle ar,. and exact descrlpt-loni of'thc liquid hydrocarbons.-

U STATES PATENT curios.

RUDOLF HEN-SE, OF GHARLOTTENBUM' GERMANY.

PROCESS F03. QB l -I NG A ARGE IQU D AB IG LQBJZY FO EX BO IQN-M QR E L QU D YDBQC BBOQI S.

. Specification of Letters Ratent.

. Application filed June 20, 1908; Serial No, 439,493.

Patented Sept. 16, 1913-.

170.,all whom it may concern: v 7

Be it known that I, 'RUnoLr Hnnsn chem ist, a. subject of the Kingof Prussia, residing at No. 22 Leonhardstrasse, Charlottenburg, in the Kingdom of-Prussia, Emp re of Germany, have invented certain new and useful improvements in processes for obtaining; acharge liquid: particularly adaptedfor explosion-motors. fromliquid hydrocarbons; and I do hereby declare the following to inyention, such. as will, enable others. skilled in the art to which it appertains to make and use the same.

The object, of my present invention, 1s. to obtain an easilyvolatilizables and uniformly gasifying combustible particularly adapted for explosion-motors. by m xing; easily v at l ab quid. hydr c r o Such as enzol 1'. simi r produc s f e 9 :11 and tar distillation, as. well. as. earbomobodms and nitro bodies with. diflicultlyvolat l zable such as. earthroil, crude naphtha, raw or distilled petroleum. The resulting liquid can be gasifiedun the Same. profitable manner by any k nd; n of ea ifi b Hitherto it has often been tried toimx benzin with the cheaper benzol to obtain a combustiblefor explosion-motors, but the resulting. mixture did not; answer the requirements, because both. liquids do not g si y un form y t h e emp atur sothat they cannot be. ad'yantageously enlpl'oyedv the same gasifier.

' To. woidi hese dr w cks nd toob am a very volatile and uniformly gasifying combustible of; high: value Which-shall, be particularly well adapted for explosionmotors, is the. object of; my. present nvention To this end I. add toa heavy-hydrocarbon distilling at a. high. temperatures me caustic soda and mixwith this. product. a. liquid hydrocarbon d stilling at a lower temperature. Tov the resultlng mixture are then added, a. rosin fur, instance CQl0Dh9 Wi'3 e l s ni mpo n s like picnic-acid; of which. in xture the. clear. part is. drawn, off and; .Sub ected to. a fractional distillation to obtain the der ired ;liquid'-combustible of-1 high. value. at temperatures up obtained is enriched by about 25% of a distillate which was. obtained firstly by a distillation of the liquid up to, 150, a mixture is produced far better adapted for many industrial purposes. than the natural oil of turpentine. To illustrate this more clearly it may be-stated that to 100 pounds of petroleum are added, 20 pounds of benzene (G l-I after which to. this mixture half a pound ofcaustic potash is added and the resulting mixture is thoroughly stirred.

for about 6 hours, the formed-sediment is taken off. In the meantime about 5 pounds. of colophony and LG ounce of picric-acid are dissolved inf'benzeneeach in separate vessels. Instead ofbenzene a. part of the first prepared mixture of petroleum and benzene without, thecaustic potash can be used.

The rosin solutionis added firstly tothe first prepared mixture-and afterward the ,picric-acidrsolution is added. The pier-icacid-solution-can also'be added firstly to the rosin-solution and this: product then be poured intothe-first prepared mixture. It must be mentioned; that. it is necessary in the'first manner of; mixing to add the rosinsolution, firstly and. inthe second manner of .mixing to pour out the-picric-acid-solution firstly intotherosin-solution. The pouring out must take place in a thin jet and during this the=mixture-must be stirred-continually. The stirring is-continued till, the mixture gets a reddish colon. Then 1.6 ounce of English. sulfuric-acid of. 66% and the same quantity of desiccated Glauber salt is added :by pouring said liquids in.a thin-jet into the mixture unden continual stirring same. After thismixture has settled for 24 hours, it is drawnofi: and then-about 3.5 ounces of amyl-acetate are added; to destroy thebad smell, for which latter purpose saidamylacetate is. usually employed. After this. the mixtureis subjected. to a fractional distillation to'obtaintherefrom the desired com- .bu'stible at temperature up to.2,50 G. and

points, fllhe part of. the mixture, which;di's-' Ltils at a. higher, temperatureand which remains after the combustible has been removedby distillation, canbe advantageously employed. as a fat-dissolyer and as a subst 1- tute for turpentine. The characterlst c feature of my, present invention consists After this mixture has. been left to, settle other. valuable, products of higher. boiling therein, that for reasons of the accomplished homogeneous mixing of the ingredients this distillation proceeds on a uniformly ascending curve, 2'. e. the temperature rises during the distilling operation without interruptions, and further consists therein that the splitting up'of the mixture into'its components does not take place. If for instance to this mixture 20% of light hydrocarbons are added, up to 40% of the new product distils over at the temperature of evaporation of said mixture; or in other words, the product obtained in accordance with my ucts not treated inthe described manner, inasmuch as the lower distilling fraction predominates to such a degree, that for instance up to a temperature of 160 C. about 40% more'of the distillate will be produced than possibly can be obtained when the mixture is not treated according to my presentinvention. The addition of alkali and rosin to the mixtures of hydrocarbons has for its purpose to form a rosin-soap which is adapted to envelop the parafiin constituents of the petroleum in form of a rosin-soap-emulsion, to unite with this emulsion and to precipitate the same. After this emulsion has settled the mixture of the purified hydrocarbon can easily be separated from the emulsion. By this purification of the hydrocarbon mixture together with the subsequent fractional distillation is obtained that the hydrocarbons are free from paraflin constituents, so that a complete gasification of the hydrocarbons can take place without dirtying or corrodin the motors. In order to intensify the gasi cation of the combustible a small ercentage of compounds of the nitro (N0 group such as picric-acid is added to the mixture. It has been proved, that small quantities of picric-acid are sulficient to nitrate the hydrocarbons and that in this manner compounds of the nitro (N0 group can be added to the combustibles whereby the gasification of the admixed petroleum is made possible. Below the products obtained by this distillation are given accordin take place at ifi'erent boiling-points, and their advantages are enumerated.

The fraction which takes place below 250 C. produces the liquid which is particularly well adapted to'be employed as a liquid combustible for explosion-motors and possesses the following advantages :-1. The liquid as such is almost scentless and-tasteless, and is completely scentless during .gasification. 2. The products of gasification are comparatively cool and non-corrosive, so

that the motor is not nearly as much heated stance by an electric spark.

to their fractions, which without clogging it with soot. 4. The ex.

The specific gravity can be varied considerably according to the percentual changes of the additions made, without causing the present invention does not behave llke prodenumerated advantages to sufi'er, if suitable proportions of their quantities are observed. 8. The liquid is proof against explosion and can only be brought to explosion by means of an igniting-flame or flash-light, as for in- 9. The combustion requires an essentially smaller supply of air or oxygen. 10. The expenses of producing said liquid are considerably lower than those of the benzin. The products of the fraction which takes place between 250 to 300 .C. can be most advantageously used as a substitute for turpentine for the extraction of fat from bones and the like. to 25% of the first obtained distillate are added, a liquid is obtained, which possesses qualities far better adapted for the manufacture of. lacs, printing-colors, bootand shoe-creams and the like, than those of the natural turpentine-oil.

Under benzin, as employed in the present application, is to be understood the first product obtained by distilling crude petroleum.

I claim p 1. Process for obtaining a combustible of high value, consisting in adding light'hydrocarbon to heavy hydrocarbon distilling at a high temperature, mixing this product with caustic potash, settling this mixture, taking ofi the sediment, adding to the resulting mixture rosin substances as colophony and compounds of the nitro (N0 group as picric-acid, settling this mixture, drawing off the liquid and purifying and clearing this hydrocarbon by fractional distillation.

2. Process for obtaining a combustible of high value, consisting in adding light hydrocarbon to heavy hydrocarbon distilling at a high temperature, mixing this product with caustic potash, settling this mixture, taking off the sediment, adding to the resulting mixture rosin substances as colophony and compounds of the nitro (N0 group as picric-acid, settling this mixture, drawing ofl the clear part of said mixture and obtaining said combustible by distilling the drawn-ofi mixture at temperatures up to 250 C.

When to these products up' 3. Process for obtaining a combustible of drocarbon to heavy hydrocarbon distilling phony and compounds of the nitro (N group as picric-acid, settling this mixture,

drawing ed the clear part of said mixture, purifying this hydrocarbon by adding sulfuric-acid and Glauber salt and decanting the formed sediment and purifying the liquid by fractional distillation at temperatures up to 250 C.

4. Process for obtaining a combustible of high value and a substitute for turpentine, consisting in adding light hydrocarbon to the heavy hydrocarbon distilling at a high temperature, mixing this product with caustic potash, settling this mixture, taking off the sediment, adding to the resulting mixture rosin substances as 0010 hony and compounds of the nitro (NO group as picricacid, settling this mixture, drawing off the clear part of said mixture, distilling the liquid at temperatures up to 250 (3., gathering thedistillate, distilling and condens-. ing same at temperatures up to 300 C. and mixing 25% of the first obtained distillate with the latter.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

RUDOLF HENSE. Witnesses: v

WOLDEMAR HAUPT, HENRY HASPER. 

